/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #000000;
    --secondary-color: #333333;
    --accent-color: #666666;
    --text-color: #333333;
    --text-light: #666666;
    --background-color: #ffffff;
    --section-bg: #f8f9fa;
    --border-color: #e9ecef;
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;
    
    --font-primary: 'Roboto', sans-serif;
    --font-heading: 'Oswald', sans-serif;
    
    --container-max-width: 1200px;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    min-width: 140px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Header */
.header {
    background-color: var(--background-color);
    box-shadow: var(--box-shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 20%;
    object-fit: cover;
}

.brand-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 0;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover {
    color: var(--primary-color);
}

.dropdown-toggle i {
    font-size: 0.8rem;
    transition: var(--transition);
}

.dropdown:hover .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    min-width: 200px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    transition: var(--transition);
}

.dropdown-link:hover {
    background-color: var(--section-bg);
    color: var(--primary-color);
}

.nav-contact {
    display: flex;
    align-items: center;
}

.phone-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.phone-link:hover {
    background-color: var(--primary-color);
    color: white;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    color: white;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('./image/home-bg.webp') no-repeat center center;
    background-size: cover;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-stat {
    text-align: center;
    color: white;
}

.hero-stat .stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-heading);
    margin-bottom: 0.25rem;
    color: white;
}

.hero-stat .stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
    color: white;
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-arrow {
    color: white;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Services Section */
.services {
    padding: 5rem 0;
    background-color: var(--section-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.service-title {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-description {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.service-list {
    list-style: none;
    text-align: left;
}

.service-list li {
    padding: 0.5rem 0;
    color: var(--text-color);
    position: relative;
    padding-left: 1.5rem;
}

.service-list li:before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* About Section */
.about {
    padding: 5rem 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-description {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.about-stats {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-heading);
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

.about-image {
    text-align: center;
}

.about-img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.about-subtitle {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-family: var(--font-heading);
}

/* Professional Qualities */
.professional-qualities {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.qualities-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 1.75rem;
}

.qualities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.quality-item {
    text-align: center;
    padding: 1.5rem;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.quality-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.quality-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.5rem;
}

.quality-item h4 {
    color: var(--text-color);
    margin: 0;
    font-size: 1.1rem;
    font-weight: 500;
}

/* Demolition Services Grid */
.demolition-services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.demolition-service-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.demolition-service-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.service-image {
    height: 150px;
    overflow: hidden;
}

.demo-service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-content {
    padding: 1.5rem;
}

.service-name {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    font-family: var(--font-heading);
}

.service-details {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

/* Satisfaction Guarantee Section */
.satisfaction-guarantee {
    padding: 5rem 0;
    background-color: var(--section-bg);
}

.guarantee-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: flex-start;
}

.guarantee-description {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Expandable Features */
.expandable-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.expandable-item {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.expandable-btn {
    width: 100%;
    padding: 1.5rem;
    background-color: transparent;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-primary);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-color);
    transition: var(--transition);
}

.expandable-btn:hover {
    background-color: var(--section-bg);
}

.expandable-btn.active {
    background-color: var(--primary-color);
    color: white;
}

.btn-icon {
    transition: var(--transition);
    font-size: 1rem;
}

.expandable-btn.active .btn-icon {
    transform: rotate(45deg);
}

.expandable-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background-color: var(--section-bg);
}

.expandable-content.active {
    max-height: 200px;
}

.expandable-content p {
    padding: 1.5rem;
    margin: 0;
    color: var(--text-color);
    line-height: 1.6;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-description {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-text h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-text a {
    color: var(--text-color);
    transition: var(--transition);
}

.contact-text a:hover {
    color: var(--primary-color);
}

/* Contact Form */
.contact-form-container {
    background-color: var(--section-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.form-title {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-submit {
    width: 100%;
    position: relative;
}

.form-success,
.form-error {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.form-success {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.form-error {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    height: 60px;
    width: 60px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
}

.footer-brand h3 {
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.footer-links h4,
.footer-contact h4,
.footer-business h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-links ul,
.footer-contact ul,
.footer-business ul {
    list-style: none;
}

.footer-links li,
.footer-contact li,
.footer-business li {
    margin-bottom: 0.5rem;
}

.footer-links a,
.footer-contact a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: white;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-contact i {
    width: 16px;
}

.footer-business li {
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-copyright p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.footer-links-bottom {
    display: flex;
    gap: 2rem;
}

.footer-links-bottom a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-links-bottom a:hover {
    color: white;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .about-content {
        gap: 3rem;
    }
    
    .contact-content {
        gap: 3rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--box-shadow);
        padding: 2rem 0;
        gap: 1rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-contact {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: var(--section-bg);
        margin-top: 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-stats {
        justify-content: space-around;
        gap: 1rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .hero-stat .stat-number {
        font-size: 1.75rem;
    }
    
    .qualities-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1.5rem;
    }
    
    .demolition-services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .demolition-services-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .guarantee-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .hero-stat .stat-number {
        font-size: 1.5rem;
    }
    
    .qualities-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-container {
        padding: 1.5rem;
    }
}

/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* Loading states */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus styles for better accessibility */
button:focus,
input:focus,
select:focus,
textarea:focus,
a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .footer,
    .hero-scroll,
    .scroll-to-top {
        display: none;
    }
    
    .hero {
        height: auto;
        padding: 2rem 0;
        background: none;
        color: var(--text-color);
    }
    
    .section {
        page-break-inside: avoid;
    }
}